C76.8 (Malignant neoplasm of other specified ill-defined sites) compared with D09.8 (Carcinoma in situ of other specified sites), from the official CMS tabular data. C76.8 and D09.8 name the same anatomical site (pelvo-abdominal) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — carcinoma in situ (pelvo-abdominal)
The behavior documented for the site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column of the neoplasm table, and therefore which code, applies.
Source: CMS Table of Neoplasms
Same site, different neoplasm behavior. C76.8 and D09.8 name the same anatomical site (pelvo-abdominal) with a different neoplasm behavior.
From the CMS Table of Neoplasms: the behavior documented for that site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column, and therefore which code, applies.
| C76.8Malignant neoplasm of other specified ill-defined sites | D09.8Carcinoma in situ of other specified sites | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Malignant neoplasm of other specified ill-defined sites is a billable ICD-10-CM diagnosis code (C76.8). | Carcinoma in situ of other specified sites is a billable ICD-10-CM diagnosis code (D09.8). |
| Includes | Malignant neoplasm of overlapping ill-defined sites | Bowen's disease erythroplasia grade III intraepithelial neoplasia Queyrat's erythroplasia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources